You're Doing Web & eBook Footnotes Wrong

The Problem

This is silly for many reasons. First, computer screens aren't paper; they can easily accordion open and show extra information based on user intent. Second, they cause a user to lose context while reading an article, forcing them to jump away from what they are doing; this is annoying.

While the link text isn't a single character superscript, it could be -- I prefer what you've been doing in recent posts like http://codinginparadise.org/ebooks/html/blog/books_as_software.html#why_svn_not_git to the footnotes shown in this one -- former are linkable, and aren't modal. But but both have one disadvantage relative to footnotes at bottom--unexpanded, in-page search doesn't search them. Is there any workaround for this?